https://sindome.org/bgbb/game-discussion/ideas/sleaze-sneak-counterpart-2958/
On the one hand, some suggest that in order to know a dip dipped you, you have to receive the game's messaging saying you noticed it. Others suggest that they think it's fine to just assume based on which named characters they've seen and how they acted between last knowing the thing was there and realizing it is now gone.
I personally think it's a mix of the two. Like a lot of things it,s shades of gray in my eyes.How I try and approach it:
Consider ambient population. If you 'l direction' you get a message about how much ambient population is in that direction. It can range from bustling to nobody.
If I am in a room with no ambient population and know I have my flashlight, someone comes in then leaves and I no longer have my flashlight, I think it's fair to assume they took it. From the PC's perspective the field is severely limited. I might very well be wrong in my assumption but I see no reason why I couldn't assume.
Outside of this, however, I would do my best to have my PC remain ignorant should they notice things missing. If my character entered any room with ambient population between the time I knew I had the flashlight and the time I notice it missing, I will have my PC be clueless. Even if they only encountered one named character. I do this because there were many, many other people about so ICly I don't think my character has reason to suspect the named character specifically.
But what if I saw that named character was hiding or in a poncho? Well, I still try and keep my PC ignorant. Ponchos abound and plenty of people in a dangerous city will try and go unnoticed. I personally feel my PC doesn't have enough to go on.
At the same time, players can have their PCs make any assumptions they want really. While I am sure there are some very outlandish cases where GMs will get involved and slap someone's wrist for this kind of thing, staff has chosen to largely remove themselves from the question of IDing people. While I have seen reminders about small worlding, it gets fuzzy when it comes to IDing characters and I wouldn't want to trust to this for protecting my character's identity.
I would say, however, that this assuming can go very wrong. I've seen it happen on many occasions. I once watched a pair of PCs go from close friends to hated enemies over an item stolen by an unseen third party. Just because one chose to assume their friend did it. Even though they had been very crowded places and it could have been anyone.
That's my take on this one. I'd be curious to know what others think on the matter of assumptions, stealth, disguise and ambient population.